Supports custom API address.

[Sam5440]

Due to certain restricted reasons, my API source is unofficial. I hope to add a place where I can customize the API address.

[Manouchehri]

Likewise! The endpoints are hardcoded here:

deepclaude/src/clients/anthropic.rs

Line 50 in ebf8d36

pub(crate) const ANTHROPIC_API_URL: &str = "https://api.anthropic.com/v1/messages";

deepclaude/src/clients/deepseek.rs

Line 68 in ebf8d36

pub(crate) const DEEPSEEK_API_URL: &str = "https://api.deepseek.com/chat/completions";

[Manouchehri]

Duplicate of #11.